src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/textctrl.h"
  14 #include "wx/utils.h"
  15 #include "wx/intl.h"
  16 #include "wx/log.h"
  17 #include "wx/math.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20 #include "wx/strconv.h"
  21 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <ctype.h>
  26 #include "wx/math.h"
  27
  28 #include "wx/gtk/private.h"
  29 #include <gdk/gdkkeysyms.h>
  30
  31 //-----------------------------------------------------------------------------
  32 // data
  33 //-----------------------------------------------------------------------------
  34
  35 extern wxCursor   g_globalCursor;
  36 extern wxWindowGTK *g_delayedFocus;
  37
  38 // ----------------------------------------------------------------------------
  39 // helpers
  40 // ----------------------------------------------------------------------------
  41
  42 extern "C" {
  43 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  44                              GtkTextTag *tag,
  45                              GtkTextIter *start,
  46                              GtkTextIter *end,
  47                              char *prefix)
  48 {
  49     gchar *name;
  50     g_object_get (tag, "name", &name, NULL);
  51
  52     if (!name || strncmp(name, prefix, strlen(prefix)))
  53         // anonymous tag or not starting with prefix - don't remove
  54         g_signal_stop_emission_by_name (buffer, "remove_tag");
  55
  56     g_free(name);
  57 }
  58 }
  59
  60 extern "C" {
  61 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  62                                        const wxTextAttr& attr,
  63                                        GtkTextIter *start,
  64                                        GtkTextIter *end)
  65 {
  66     static gchar buf[1024];
  67     GtkTextTag *tag;
  68
  69     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  70             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  71     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  72     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  73
  74     if (attr.HasFont())
  75     {
  76         char *font_string;
  77         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  78         font_string = pango_font_description_to_string(font_description);
  79         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  80         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  81                                          buf );
  82         if (!tag)
  83             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  84                                               "font-desc", font_description,
  85                                               NULL );
  86         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  87         g_free (font_string);
  88     }
  89
  90     if (attr.HasTextColour())
  91     {
  92         GdkColor *colFg = attr.GetTextColour().GetColor();
  93         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  94                    colFg->red, colFg->green, colFg->blue);
  95         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  96                                          buf );
  97         if (!tag)
  98             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  99                                               "foreground-gdk", colFg, NULL );
 100         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 101     }
 102
 103     if (attr.HasBackgroundColour())
 104     {
 105         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 106         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 107                    colBg->red, colBg->green, colBg->blue);
 108         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 109                                          buf );
 110         if (!tag)
 111             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 112                                               "background-gdk", colBg, NULL );
 113         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 114     }
 115
 116     if (attr.HasAlignment())
 117     {
 118         GtkTextIter para_start, para_end = *end;
 119         gtk_text_buffer_get_iter_at_line( text_buffer,
 120                                           &para_start,
 121                                           gtk_text_iter_get_line(start) );
 122         gtk_text_iter_forward_line(&para_end);
 123
 124         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 125                                               G_CALLBACK(wxGtkOnRemoveTag),
 126                                               gpointer("WXALIGNMENT"));
 127         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 128         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 129
 130         GtkJustification align;
 131         switch (attr.GetAlignment())
 132         {
 133             default:
 134                 align = GTK_JUSTIFY_LEFT;
 135                 break;
 136             case wxTEXT_ALIGNMENT_RIGHT:
 137                 align = GTK_JUSTIFY_RIGHT;
 138                 break;
 139             case wxTEXT_ALIGNMENT_CENTER:
 140                 align = GTK_JUSTIFY_CENTER;
 141                 break;
 142             // gtk+ doesn't support justify as of gtk+-2.7.4
 143         }
 144
 145         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 146         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 147                                          buf );
 148         if (!tag)
 149             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 150                                               "justification", align, NULL );
 151         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 152     }
 153 }
 154 }
 155
 156 extern "C" {
 157 static void wxGtkTextInsert(GtkWidget *text,
 158                             GtkTextBuffer *text_buffer,
 159                             const wxTextAttr& attr,
 160                             const wxCharBuffer& buffer)
 161
 162 {
 163     gint start_offset;
 164     GtkTextIter iter, start;
 165
 166     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 167                                      gtk_text_buffer_get_insert (text_buffer) );
 168     start_offset = gtk_text_iter_get_offset (&iter);
 169     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 170
 171     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 172
 173     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 174 }
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // "insert_text" for GtkEntry
 179 // ----------------------------------------------------------------------------
 180
 181 extern "C" {
 182 static void
 183 gtk_insert_text_callback(GtkEditable *editable,
 184                          const gchar *new_text,
 185                          gint new_text_length,
 186                          gint *position,
 187                          wxTextCtrl *win)
 188 {
 189     if (g_isIdle)
 190         wxapp_install_idle_handler();
 191
 192     // we should only be called if we have a max len limit at all
 193     GtkEntry *entry = GTK_ENTRY (editable);
 194
 195     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 196
 197     // check that we don't overflow the max length limit
 198     //
 199     // FIXME: this doesn't work when we paste a string which is going to be
 200     //        truncated
 201     if ( entry->text_length == entry->text_max_length )
 202     {
 203         // we don't need to run the base class version at all
 204         g_signal_stop_emission_by_name (editable, "insert_text");
 205
 206         // remember that the next changed signal is to be ignored to avoid
 207         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 208         win->IgnoreNextTextUpdate();
 209
 210         // and generate the correct one ourselves
 211         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 212         event.SetEventObject(win);
 213         event.SetString(win->GetValue());
 214         win->GetEventHandler()->ProcessEvent( event );
 215     }
 216 }
 217 }
 218
 219 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 220
 221 extern "C" {
 222 static void
 223 au_apply_tag_callback(GtkTextBuffer *buffer,
 224                       GtkTextTag *tag,
 225                       GtkTextIter *start,
 226                       GtkTextIter *end,
 227                       gpointer textctrl)
 228 {
 229     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 230         g_signal_stop_emission_by_name (buffer, "apply_tag");
 231 }
 232 }
 233
 234 //-----------------------------------------------------------------------------
 235 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 236 //-----------------------------------------------------------------------------
 237
 238 extern "C" {
 239 static gboolean
 240 pred_whitespace (gunichar ch, gpointer user_data)
 241 {
 242     return g_unichar_isspace(ch);
 243 }
 244 }
 245
 246 extern "C" {
 247 static gboolean
 248 pred_non_whitespace (gunichar ch, gpointer user_data)
 249 {
 250     return !g_unichar_isspace(ch);
 251 }
 252 }
 253
 254 extern "C" {
 255 static gboolean
 256 pred_nonpunct (gunichar ch, gpointer user_data)
 257 {
 258     return !g_unichar_ispunct(ch);
 259 }
 260 }
 261
 262 extern "C" {
 263 static gboolean
 264 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 265 {
 266     return !g_unichar_ispunct(ch) || ch == '/';
 267 }
 268 }
 269
 270 //-----------------------------------------------------------------------------
 271 //  Check for links between s and e and correct tags as necessary
 272 //-----------------------------------------------------------------------------
 273
 274 // This function should be made match better while being efficient at one point.
 275 // Most probably with a row of regular expressions.
 276 extern "C" {
 277 static void
 278 au_check_word( GtkTextIter *s, GtkTextIter *e )
 279 {
 280     static const char *URIPrefixes[] =
 281     {
 282         "http://",
 283         "ftp://",
 284         "www.",
 285         "ftp.",
 286         "mailto://",
 287         "https://",
 288         "file://",
 289         "nntp://",
 290         "news://",
 291         "telnet://",
 292         "mms://",
 293         "gopher://",
 294         "prospero://",
 295         "wais://",
 296     };
 297
 298     GtkTextIter start = *s, end = *e;
 299     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 300
 301     // Get our special link tag
 302     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 303
 304     // Get rid of punctuation from beginning and end.
 305     // Might want to move this to au_check_range if an improved link checking doesn't
 306     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 307     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 308         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 309
 310     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 311     gtk_text_iter_forward_char(&end);
 312
 313     gchar* text = gtk_text_iter_get_text( &start, &end );
 314     size_t len = strlen(text), prefix_len;
 315     size_t n;
 316
 317     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 318     {
 319         prefix_len = strlen(URIPrefixes[n]);
 320         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 321             break;
 322     }
 323
 324     if(n < WXSIZEOF(URIPrefixes))
 325     {
 326         gulong signal_id = g_signal_handler_find (buffer,
 327                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 328                                                   0, 0, NULL,
 329                                                   (gpointer)au_apply_tag_callback, NULL);
 330
 331         g_signal_handler_block (buffer, signal_id);
 332         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 333         g_signal_handler_unblock (buffer, signal_id);
 334     }
 335 }
 336 }
 337
 338 extern "C" {
 339 static void
 340 au_check_range(GtkTextIter *s,
 341                GtkTextIter *range_end)
 342 {
 343     GtkTextIter range_start = *s;
 344     GtkTextIter word_end;
 345     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 346     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 347
 348     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 349
 350     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 351         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 352
 353     while(!gtk_text_iter_equal(&range_start, range_end))
 354     {
 355         word_end = range_start;
 356         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 357
 358         // Now we should have a word delimited by range_start and word_end, correct link tags
 359         au_check_word(&range_start, &word_end);
 360
 361         range_start = word_end;
 362         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 363     }
 364 }
 365 }
 366
 367 //-----------------------------------------------------------------------------
 368 //  "insert-text" for GtkTextBuffer
 369 //-----------------------------------------------------------------------------
 370
 371 extern "C" {
 372 static void
 373 au_insert_text_callback(GtkTextBuffer *buffer,
 374                         GtkTextIter *end,
 375                         gchar *text,
 376                         gint len,
 377                         wxTextCtrl *win)
 378 {
 379     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 380         return;
 381
 382     GtkTextIter start = *end;
 383     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 384
 385     GtkTextIter line_start = start;
 386     GtkTextIter line_end = *end;
 387     GtkTextIter words_start = start;
 388     GtkTextIter words_end = *end;
 389
 390     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 391     gtk_text_iter_forward_to_line_end(&line_end);
 392     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 393     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 394
 395     au_check_range(&words_start, &words_end);
 396 }
 397 }
 398
 399 //-----------------------------------------------------------------------------
 400 //  "delete-range" for GtkTextBuffer
 401 //-----------------------------------------------------------------------------
 402
 403 extern "C" {
 404 static void
 405 au_delete_range_callback(GtkTextBuffer *buffer,
 406                          GtkTextIter *start,
 407                          GtkTextIter *end,
 408                          wxTextCtrl *win)
 409 {
 410     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 411         return;
 412
 413     GtkTextIter line_start = *start, line_end = *end;
 414
 415     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 416     gtk_text_iter_forward_to_line_end(&line_end);
 417     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 418     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 419
 420     au_check_range(start, end);
 421 }
 422 }
 423
 424
 425 //-----------------------------------------------------------------------------
 426 //  "changed"
 427 //-----------------------------------------------------------------------------
 428
 429 extern "C" {
 430 static void
 431 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 432 {
 433     if ( win->IgnoreTextUpdate() )
 434         return;
 435
 436     if (!win->m_hasVMT) return;
 437
 438     if (g_isIdle)
 439         wxapp_install_idle_handler();
 440
 441     win->SetModified();
 442
 443     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 444     event.SetEventObject( win );
 445     win->GetEventHandler()->ProcessEvent( event );
 446 }
 447 }
 448
 449 //-----------------------------------------------------------------------------
 450 // "expose_event" from scrolled window and textview
 451 //-----------------------------------------------------------------------------
 452
 453 extern "C" {
 454 static gboolean
 455 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 456 {
 457     return TRUE;
 458 }
 459 }
 460
 461
 462 //-----------------------------------------------------------------------------
 463 //  wxTextCtrl
 464 //-----------------------------------------------------------------------------
 465
 466 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 467
 468 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 469     EVT_CHAR(wxTextCtrl::OnChar)
 470
 471     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 472     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 473     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 474     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 475     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 476
 477     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 478     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 479     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 480     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 481     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 482
 483     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 484     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 485     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 486     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 487     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 488     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 489     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 490     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 491     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 492 END_EVENT_TABLE()
 493
 494 void wxTextCtrl::Init()
 495 {
 496     m_ignoreNextUpdate =
 497     m_modified = false;
 498     SetUpdateFont(false);
 499     m_text =
 500     m_vScrollbar = (GtkWidget *)NULL;
 501     m_frozenness = 0;
 502     m_gdkHandCursor = NULL;
 503     m_gdkXTermCursor = NULL;
 504 }
 505
 506 wxTextCtrl::~wxTextCtrl()
 507 {
 508     if(m_gdkHandCursor)
 509         gdk_cursor_unref(m_gdkHandCursor);
 510     if(m_gdkXTermCursor)
 511         gdk_cursor_unref(m_gdkXTermCursor);
 512 }
 513
 514 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 515                         wxWindowID id,
 516                         const wxString &value,
 517                         const wxPoint &pos,
 518                         const wxSize &size,
 519                         long style,
 520                         const wxValidator& validator,
 521                         const wxString &name )
 522 {
 523     Init();
 524
 525     Create( parent, id, value, pos, size, style, validator, name );
 526 }
 527
 528 bool wxTextCtrl::Create( wxWindow *parent,
 529                          wxWindowID id,
 530                          const wxString &value,
 531                          const wxPoint &pos,
 532                          const wxSize &size,
 533                          long style,
 534                          const wxValidator& validator,
 535                          const wxString &name )
 536 {
 537     m_needParent = true;
 538     m_acceptsFocus = true;
 539
 540     if (!PreCreation( parent, pos, size ) ||
 541         !CreateBase( parent, id, pos, size, style, validator, name ))
 542     {
 543         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 544         return false;
 545     }
 546
 547
 548     m_vScrollbarVisible = false;
 549
 550     bool multi_line = (style & wxTE_MULTILINE) != 0;
 551
 552     if (multi_line)
 553     {
 554         // Create view
 555         m_text = gtk_text_view_new();
 556
 557         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 558
 559         // create scrolled window
 560         m_widget = gtk_scrolled_window_new( NULL, NULL );
 561         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 562                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 563
 564         // Insert view into scrolled window
 565         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 566
 567         // translate wx wrapping style to GTK+
 568         GtkWrapMode wrap;
 569         if ( HasFlag( wxTE_DONTWRAP ) )
 570             wrap = GTK_WRAP_NONE;
 571         else if ( HasFlag( wxTE_CHARWRAP ) )
 572             wrap = GTK_WRAP_CHAR;
 573         else if ( HasFlag( wxTE_WORDWRAP ) )
 574             wrap = GTK_WRAP_WORD;
 575         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 576         {
 577             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 578 #ifdef __WXGTK24__
 579             if ( !gtk_check_version(2,4,0) )
 580             {
 581                 wrap = GTK_WRAP_WORD_CHAR;
 582             }
 583             else
 584 #endif
 585             wrap = GTK_WRAP_WORD;
 586         }
 587
 588         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 589
 590         if (!HasFlag(wxNO_BORDER))
 591             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 592
 593         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 594
 595         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 596     }
 597     else
 598     {
 599         // a single-line text control: no need for scrollbars
 600         m_widget =
 601         m_text = gtk_entry_new();
 602
 603         if (style & wxNO_BORDER)
 604             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 605     }
 606
 607     m_parent->DoAddChild( this );
 608
 609     m_focusWidget = m_text;
 610
 611     PostCreation(size);
 612
 613     if (multi_line)
 614     {
 615         gtk_widget_show(m_text);
 616         SetVScrollAdjustment(gtk_scrolled_window_get_vadjustment((GtkScrolledWindow*)m_widget));
 617     }
 618
 619     if (!value.empty())
 620     {
 621         SetValue( value );
 622     }
 623
 624     if (style & wxTE_PASSWORD)
 625     {
 626         if (!multi_line)
 627             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 628     }
 629
 630     if (style & wxTE_READONLY)
 631     {
 632         if (!multi_line)
 633             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 634         else
 635             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 636     }
 637
 638     if (multi_line)
 639     {
 640         if (style & wxTE_RIGHT)
 641             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 642         else if (style & wxTE_CENTRE)
 643             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 644         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 645     }
 646     else
 647     {
 648 #ifdef __WXGTK24__
 649         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 650         if (!gtk_check_version(2,4,0))
 651         {
 652             if (style & wxTE_RIGHT)
 653                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 654             else if (style & wxTE_CENTRE)
 655                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 656         }
 657 #endif
 658     }
 659
 660     // We want to be notified about text changes.
 661     if (multi_line)
 662     {
 663         g_signal_connect (m_buffer, "changed",
 664                           G_CALLBACK (gtk_text_changed_callback), this);
 665
 666         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 667         if (style & wxTE_AUTO_URL)
 668         {
 669             GtkTextIter start, end;
 670             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 671             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 672
 673             // We create our wxUrl tag here for slight efficiency gain - we
 674             // don't have to check for the tag existance in callbacks,
 675             // hereby it's guaranteed to exist.
 676             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 677                                        "foreground", "blue",
 678                                        "underline", PANGO_UNDERLINE_SINGLE,
 679                                        NULL);
 680
 681             // Check for URLs after each text change
 682             g_signal_connect_after (m_buffer, "insert_text",
 683                                     G_CALLBACK (au_insert_text_callback), this);
 684             g_signal_connect_after (m_buffer, "delete_range",
 685                                     G_CALLBACK (au_delete_range_callback), this);
 686
 687             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 688             // block this callback temporarily. This takes care of gtk+ internal
 689             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 690             // which is undesired because only a part of the URL might be copied.
 691             // The insert-text signal emitted inside it will take care of newly formed
 692             // or wholly copied URLs.
 693             g_signal_connect (m_buffer, "apply_tag",
 694                               G_CALLBACK (au_apply_tag_callback), NULL);
 695
 696             // Check for URLs in the initial string passed to Create
 697             gtk_text_buffer_get_start_iter(m_buffer, &start);
 698             gtk_text_buffer_get_end_iter(m_buffer, &end);
 699             au_check_range(&start, &end);
 700         }
 701     }
 702     else
 703     {
 704         g_signal_connect (m_text, "changed",
 705                           G_CALLBACK (gtk_text_changed_callback), this);
 706     }
 707
 708     m_cursor = wxCursor( wxCURSOR_IBEAM );
 709
 710     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 711     SetDefaultStyle( attrDef );
 712
 713     return true;
 714 }
 715
 716
 717 void wxTextCtrl::CalculateScrollbar()
 718 {
 719 }
 720
 721 wxString wxTextCtrl::GetValue() const
 722 {
 723     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 724
 725     wxString tmp;
 726     if (m_windowStyle & wxTE_MULTILINE)
 727     {
 728         GtkTextIter start;
 729         gtk_text_buffer_get_start_iter( m_buffer, &start );
 730         GtkTextIter end;
 731         gtk_text_buffer_get_end_iter( m_buffer, &end );
 732         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 733
 734 #if wxUSE_UNICODE
 735         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 736 #else
 737         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 738 #endif
 739         if ( buffer )
 740             tmp = buffer;
 741
 742         g_free( text );
 743     }
 744     else
 745     {
 746         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 747     }
 748
 749     return tmp;
 750 }
 751
 752 void wxTextCtrl::SetValue( const wxString &value )
 753 {
 754     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 755
 756     if (m_windowStyle & wxTE_MULTILINE)
 757     {
 758 #if wxUSE_UNICODE
 759         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 760 #else
 761         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 762 #endif
 763         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 764             IgnoreNextTextUpdate();
 765
 766         if ( !buffer )
 767         {
 768             // what else can we do? at least don't crash...
 769             return;
 770         }
 771
 772         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 773     }
 774     else
 775     {
 776         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 777     }
 778
 779     // GRG, Jun/2000: Changed this after a lot of discussion in
 780     //   the lists. wxWidgets 2.2 will have a set of flags to
 781     //   customize this behaviour.
 782     SetInsertionPoint(0);
 783
 784     m_modified = false;
 785 }
 786
 787 void wxTextCtrl::WriteText( const wxString &text )
 788 {
 789     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 790
 791     if ( text.empty() )
 792         return;
 793
 794     // gtk_text_changed_callback() will set m_modified to true but m_modified
 795     // shouldn't be changed by the program writing to the text control itself,
 796     // so save the old value and restore when we're done
 797     bool oldModified = m_modified;
 798
 799     if ( m_windowStyle & wxTE_MULTILINE )
 800     {
 801 #if wxUSE_UNICODE
 802         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 803 #else
 804         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 805 #endif
 806         if ( !buffer )
 807         {
 808             // what else can we do? at least don't crash...
 809             return;
 810         }
 811
 812         // TODO: Call whatever is needed to delete the selection.
 813         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 814
 815         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 816         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 817         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 818         {
 819             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 820                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 821         }
 822     }
 823     else // single line
 824     {
 825         // First remove the selection if there is one
 826         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 827
 828         // This moves the cursor pos to behind the inserted text.
 829         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 830
 831 #if wxUSE_UNICODE
 832         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 833 #else
 834         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 835 #endif
 836         if ( !buffer )
 837         {
 838             // what else can we do? at least don't crash...
 839             return;
 840         }
 841
 842         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 843
 844         // Bring entry's cursor uptodate.
 845         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 846     }
 847
 848     m_modified = oldModified;
 849 }
 850
 851 void wxTextCtrl::AppendText( const wxString &text )
 852 {
 853     SetInsertionPointEnd();
 854     WriteText( text );
 855 }
 856
 857 wxString wxTextCtrl::GetLineText( long lineNo ) const
 858 {
 859     if (m_windowStyle & wxTE_MULTILINE)
 860     {
 861         GtkTextIter line;
 862         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 863         GtkTextIter end = line;
 864         gtk_text_iter_forward_to_line_end(&end);
 865         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 866         wxString result(wxGTK_CONV_BACK(text));
 867         g_free(text);
 868         return result;
 869     }
 870     else
 871     {
 872         if (lineNo == 0) return GetValue();
 873         return wxEmptyString;
 874     }
 875 }
 876
 877 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 878 {
 879   /* If you implement this, don't forget to update the documentation!
 880    * (file docs/latex/wx/text.tex) */
 881     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 882 }
 883
 884 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 885 {
 886     if ( m_windowStyle & wxTE_MULTILINE )
 887     {
 888         GtkTextIter iter;
 889         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 890         if (gtk_text_iter_is_end(&iter))
 891             return false;
 892
 893         *y = gtk_text_iter_get_line(&iter);
 894         *x = gtk_text_iter_get_line_offset(&iter);
 895     }
 896     else // single line control
 897     {
 898         if ( pos <= GTK_ENTRY(m_text)->text_length )
 899         {
 900             *y = 0;
 901             *x = pos;
 902         }
 903         else
 904         {
 905             // index out of bounds
 906             return false;
 907         }
 908     }
 909
 910     return true;
 911 }
 912
 913 long wxTextCtrl::XYToPosition(long x, long y ) const
 914 {
 915     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 916
 917     GtkTextIter iter;
 918     if (y >= gtk_text_buffer_get_line_count (m_buffer))
 919         return -1;
 920
 921     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
 922     if (x >= gtk_text_iter_get_chars_in_line (&iter))
 923         return -1;
 924
 925     return gtk_text_iter_get_offset(&iter) + x;
 926 }
 927
 928 int wxTextCtrl::GetLineLength(long lineNo) const
 929 {
 930     if (m_windowStyle & wxTE_MULTILINE)
 931     {
 932         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
 933         if (lineNo > last_line)
 934             return -1;
 935
 936         GtkTextIter iter;
 937         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
 938         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
 939         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
 940     }
 941     else
 942     {
 943         wxString str = GetLineText (lineNo);
 944         return (int) str.Length();
 945     }
 946 }
 947
 948 int wxTextCtrl::GetNumberOfLines() const
 949 {
 950     if ( m_windowStyle & wxTE_MULTILINE )
 951     {
 952         GtkTextIter iter;
 953         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
 954
 955         // move forward by one display line until the end is reached
 956         int lineCount = 1;
 957         while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
 958         {
 959             lineCount++;
 960         }
 961
 962         // If the last character in the text buffer is a newline,
 963         // gtk_text_view_forward_display_line() will return false without that
 964         // line being counted. Must add one manually in that case.
 965         GtkTextIter lastCharIter;
 966         gtk_text_buffer_get_iter_at_offset
 967         (
 968             m_buffer,
 969             &lastCharIter,
 970             gtk_text_buffer_get_char_count(m_buffer) - 1
 971         );
 972         gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
 973         if ( lastChar == wxT('\n') )
 974             lineCount++;
 975
 976         return lineCount;
 977     }
 978     else // single line
 979     {
 980         return 1;
 981     }
 982 }
 983
 984 void wxTextCtrl::SetInsertionPoint( long pos )
 985 {
 986     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 987
 988     if ( IsMultiLine() )
 989     {
 990         GtkTextIter iter;
 991         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 992         gtk_text_buffer_place_cursor( m_buffer, &iter );
 993         gtk_text_view_scroll_mark_onscreen
 994         (
 995             GTK_TEXT_VIEW(m_text),
 996             gtk_text_buffer_get_insert( m_buffer )
 997         );
 998     }
 999     else
1000     {
1001         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1002         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1003     }
1004 }
1005
1006 void wxTextCtrl::SetInsertionPointEnd()
1007 {
1008     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1009
1010     if (m_windowStyle & wxTE_MULTILINE)
1011     {
1012         GtkTextIter end;
1013         gtk_text_buffer_get_end_iter( m_buffer, &end );
1014         gtk_text_buffer_place_cursor( m_buffer, &end );
1015     }
1016     else
1017     {
1018         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1019     }
1020 }
1021
1022 void wxTextCtrl::SetEditable( bool editable )
1023 {
1024     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1025
1026     if (m_windowStyle & wxTE_MULTILINE)
1027     {
1028         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1029     }
1030     else
1031     {
1032         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1033     }
1034 }
1035
1036 bool wxTextCtrl::Enable( bool enable )
1037 {
1038     if (!wxWindowBase::Enable(enable))
1039     {
1040         // nothing to do
1041         return false;
1042     }
1043
1044     if (m_windowStyle & wxTE_MULTILINE)
1045     {
1046         SetEditable( enable );
1047     }
1048     else
1049     {
1050         gtk_widget_set_sensitive( m_text, enable );
1051     }
1052
1053     return true;
1054 }
1055
1056 // wxGTK-specific: called recursively by Enable,
1057 // to give widgets an oppprtunity to correct their colours after they
1058 // have been changed by Enable
1059 void wxTextCtrl::OnParentEnable( bool enable )
1060 {
1061     // If we have a custom background colour, we use this colour in both
1062     // disabled and enabled mode, or we end up with a different colour under the
1063     // text.
1064     wxColour oldColour = GetBackgroundColour();
1065     if (oldColour.Ok())
1066     {
1067         // Need to set twice or it'll optimize the useful stuff out
1068         if (oldColour == * wxWHITE)
1069             SetBackgroundColour(*wxBLACK);
1070         else
1071             SetBackgroundColour(*wxWHITE);
1072         SetBackgroundColour(oldColour);
1073     }
1074 }
1075
1076 void wxTextCtrl::MarkDirty()
1077 {
1078     m_modified = true;
1079 }
1080
1081 void wxTextCtrl::DiscardEdits()
1082 {
1083     m_modified = false;
1084 }
1085
1086 // ----------------------------------------------------------------------------
1087 // max text length support
1088 // ----------------------------------------------------------------------------
1089
1090 void wxTextCtrl::IgnoreNextTextUpdate()
1091 {
1092     m_ignoreNextUpdate = true;
1093 }
1094
1095 bool wxTextCtrl::IgnoreTextUpdate()
1096 {
1097     if ( m_ignoreNextUpdate )
1098     {
1099         m_ignoreNextUpdate = false;
1100
1101         return true;
1102     }
1103
1104     return false;
1105 }
1106
1107 void wxTextCtrl::SetMaxLength(unsigned long len)
1108 {
1109     if ( !HasFlag(wxTE_MULTILINE) )
1110     {
1111         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1112
1113         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1114         // we had tried to enter more text than allowed by max text length and
1115         // the text wasn't really changed
1116         //
1117         // to detect this and generate TEXT_MAXLEN event instead of
1118         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1119         //
1120         // when max len is set to 0 we disconnect our handler as it means that
1121         // we shouldn't check anything any more
1122         if ( len )
1123         {
1124             g_signal_connect (m_text, "insert_text",
1125                               G_CALLBACK (gtk_insert_text_callback), this);
1126         }
1127         else // no checking
1128         {
1129             g_signal_handlers_disconnect_by_func (m_text,
1130                     (gpointer) gtk_insert_text_callback, this);
1131         }
1132     }
1133 }
1134
1135 void wxTextCtrl::SetSelection( long from, long to )
1136 {
1137     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1138
1139     if (from == -1 && to == -1)
1140     {
1141         from = 0;
1142         to = GetValue().Length();
1143     }
1144
1145     if (m_windowStyle & wxTE_MULTILINE)
1146     {
1147         GtkTextIter fromi, toi;
1148         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1149         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1150
1151         gtk_text_buffer_place_cursor( m_buffer, &toi );
1152         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1153     }
1154     else
1155     {
1156         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1157     }
1158 }
1159
1160 void wxTextCtrl::ShowPosition( long pos )
1161 {
1162     if (m_windowStyle & wxTE_MULTILINE)
1163     {
1164         GtkTextIter iter;
1165         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1166         gtk_text_iter_set_offset( &iter, pos );
1167         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1168         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1169     }
1170 }
1171
1172 wxTextCtrlHitTestResult
1173 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1174 {
1175     if ( !IsMultiLine() )
1176     {
1177         // not supported
1178         return wxTE_HT_UNKNOWN;
1179     }
1180
1181     int x, y;
1182     gtk_text_view_window_to_buffer_coords
1183     (
1184         GTK_TEXT_VIEW(m_text),
1185         GTK_TEXT_WINDOW_TEXT,
1186         pt.x, pt.y,
1187         &x, &y
1188     );
1189
1190     GtkTextIter iter;
1191     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1192     if ( pos )
1193         *pos = gtk_text_iter_get_offset(&iter);
1194
1195     return wxTE_HT_ON_TEXT;
1196 }
1197
1198 long wxTextCtrl::GetInsertionPoint() const
1199 {
1200     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1201
1202     if (m_windowStyle & wxTE_MULTILINE)
1203     {
1204         // There is no direct accessor for the cursor, but
1205         // internally, the cursor is the "mark" called
1206         // "insert" in the text view's btree structure.
1207
1208         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1209         GtkTextIter cursor;
1210         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1211
1212         return gtk_text_iter_get_offset( &cursor );
1213     }
1214     else
1215     {
1216         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1217     }
1218 }
1219
1220 wxTextPos wxTextCtrl::GetLastPosition() const
1221 {
1222     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1223
1224     int pos = 0;
1225
1226     if (m_windowStyle & wxTE_MULTILINE)
1227     {
1228         GtkTextIter end;
1229         gtk_text_buffer_get_end_iter( m_buffer, &end );
1230
1231         pos = gtk_text_iter_get_offset( &end );
1232     }
1233     else
1234     {
1235         pos = GTK_ENTRY(m_text)->text_length;
1236     }
1237
1238     return (long)pos;
1239 }
1240
1241 void wxTextCtrl::Remove( long from, long to )
1242 {
1243     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1244
1245     if (m_windowStyle & wxTE_MULTILINE)
1246     {
1247         GtkTextIter fromi, toi;
1248         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1249         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1250
1251         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1252     }
1253     else // single line
1254         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1255 }
1256
1257 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1258 {
1259     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1260
1261     Remove( from, to );
1262
1263     if (!value.empty())
1264     {
1265         SetInsertionPoint( from );
1266         WriteText( value );
1267     }
1268 }
1269
1270 void wxTextCtrl::Cut()
1271 {
1272     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1273
1274     if (m_windowStyle & wxTE_MULTILINE)
1275         g_signal_emit_by_name (m_text, "cut-clipboard");
1276     else
1277         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1278 }
1279
1280 void wxTextCtrl::Copy()
1281 {
1282     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1283
1284     if (m_windowStyle & wxTE_MULTILINE)
1285         g_signal_emit_by_name (m_text, "copy-clipboard");
1286     else
1287         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1288 }
1289
1290 void wxTextCtrl::Paste()
1291 {
1292     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1293
1294     if (m_windowStyle & wxTE_MULTILINE)
1295         g_signal_emit_by_name (m_text, "paste-clipboard");
1296     else
1297         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1298 }
1299
1300 // Undo/redo
1301 void wxTextCtrl::Undo()
1302 {
1303     // TODO
1304     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1305 }
1306
1307 void wxTextCtrl::Redo()
1308 {
1309     // TODO
1310     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1311 }
1312
1313 bool wxTextCtrl::CanUndo() const
1314 {
1315     // TODO
1316     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1317     return false;
1318 }
1319
1320 bool wxTextCtrl::CanRedo() const
1321 {
1322     // TODO
1323     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1324     return false;
1325 }
1326
1327 // If the return values from and to are the same, there is no
1328 // selection.
1329 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1330 {
1331     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1332
1333     gint from = -1;
1334     gint to = -1;
1335     bool haveSelection = false;
1336
1337      if (m_windowStyle & wxTE_MULTILINE)
1338      {
1339          GtkTextIter ifrom, ito;
1340          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1341          {
1342              haveSelection = true;
1343              from = gtk_text_iter_get_offset(&ifrom);
1344              to = gtk_text_iter_get_offset(&ito);
1345          }
1346      }
1347      else  // not multi-line
1348      {
1349          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1350                                                  &from, &to) )
1351          {
1352              haveSelection = true;
1353          }
1354      }
1355
1356      if (! haveSelection )
1357           from = to = GetInsertionPoint();
1358
1359      if ( from > to )
1360      {
1361          // exchange them to be compatible with wxMSW
1362          gint tmp = from;
1363          from = to;
1364          to = tmp;
1365      }
1366
1367     if ( fromOut )
1368         *fromOut = from;
1369     if ( toOut )
1370         *toOut = to;
1371 }
1372
1373
1374 bool wxTextCtrl::IsEditable() const
1375 {
1376     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1377
1378     if (m_windowStyle & wxTE_MULTILINE)
1379     {
1380         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1381     }
1382     else
1383     {
1384         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1385     }
1386 }
1387
1388 bool wxTextCtrl::IsModified() const
1389 {
1390     return m_modified;
1391 }
1392
1393 void wxTextCtrl::Clear()
1394 {
1395     SetValue( wxEmptyString );
1396 }
1397
1398 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1399 {
1400     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1401
1402     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1403     {
1404         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1405         event.SetEventObject(this);
1406         event.SetString(GetValue());
1407         if (GetEventHandler()->ProcessEvent(event)) return;
1408     }
1409
1410     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1411     {
1412         // This will invoke the dialog default action, such
1413         // as the clicking the default button.
1414
1415         wxWindow *top_frame = m_parent;
1416         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1417             top_frame = top_frame->GetParent();
1418
1419         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1420         {
1421             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1422
1423             if (window->default_widget)
1424             {
1425                 gtk_widget_activate (window->default_widget);
1426                 return;
1427             }
1428         }
1429     }
1430
1431     key_event.Skip();
1432 }
1433
1434 GtkWidget* wxTextCtrl::GetConnectWidget()
1435 {
1436     return GTK_WIDGET(m_text);
1437 }
1438
1439 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1440 {
1441     if (m_windowStyle & wxTE_MULTILINE)
1442     {
1443         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1444     }
1445     else
1446     {
1447         return (window == GTK_ENTRY(m_text)->text_area);
1448     }
1449 }
1450
1451 // the font will change for subsequent text insertiongs
1452 bool wxTextCtrl::SetFont( const wxFont &font )
1453 {
1454     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1455
1456     if ( !wxTextCtrlBase::SetFont(font) )
1457     {
1458         // font didn't change, nothing to do
1459         return false;
1460     }
1461
1462     if ( m_windowStyle & wxTE_MULTILINE )
1463     {
1464         SetUpdateFont(true);
1465
1466         m_defaultStyle.SetFont(font);
1467
1468         ChangeFontGlobally();
1469     }
1470
1471     return true;
1472 }
1473
1474 void wxTextCtrl::ChangeFontGlobally()
1475 {
1476     // this method is very inefficient and hence should be called as rarely as
1477     // possible!
1478     //
1479     // TODO: it can be implemented much more efficiently for GTK2
1480     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1481                   _T("shouldn't be called for single line controls") );
1482
1483     wxString value = GetValue();
1484     if ( !value.empty() )
1485     {
1486         SetUpdateFont(false);
1487
1488         Clear();
1489         AppendText(value);
1490     }
1491 }
1492
1493 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1494 {
1495     if ( !wxControl::SetForegroundColour(colour) )
1496         return false;
1497
1498     // update default fg colour too
1499     m_defaultStyle.SetTextColour(colour);
1500
1501     return true;
1502 }
1503
1504 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1505 {
1506     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1507
1508     if ( !wxControl::SetBackgroundColour( colour ) )
1509         return false;
1510
1511     if (!m_backgroundColour.Ok())
1512         return false;
1513
1514     // change active background color too
1515     m_defaultStyle.SetBackgroundColour( colour );
1516
1517     return true;
1518 }
1519
1520 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1521 {
1522     if ( m_windowStyle & wxTE_MULTILINE )
1523     {
1524         if ( style.IsDefault() )
1525         {
1526             // nothing to do
1527             return true;
1528         }
1529
1530         gint l = gtk_text_buffer_get_char_count( m_buffer );
1531
1532         wxCHECK_MSG( start >= 0 && end <= l, false,
1533                      _T("invalid range in wxTextCtrl::SetStyle") );
1534
1535         GtkTextIter starti, endi;
1536         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1537         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1538
1539         // use the attributes from style which are set in it and fall back
1540         // first to the default style and then to the text control default
1541         // colours for the others
1542         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1543
1544         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1545
1546         return true;
1547     }
1548
1549     // else single line
1550     // cannot do this for GTK+'s Entry widget
1551     return false;
1552 }
1553
1554 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1555 {
1556     gtk_widget_modify_style(m_text, style);
1557 }
1558
1559 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1560 {
1561     Cut();
1562 }
1563
1564 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1565 {
1566     Copy();
1567 }
1568
1569 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1570 {
1571     Paste();
1572 }
1573
1574 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1575 {
1576     Undo();
1577 }
1578
1579 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1580 {
1581     Redo();
1582 }
1583
1584 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1585 {
1586     event.Enable( CanCut() );
1587 }
1588
1589 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1590 {
1591     event.Enable( CanCopy() );
1592 }
1593
1594 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1595 {
1596     event.Enable( CanPaste() );
1597 }
1598
1599 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1600 {
1601     event.Enable( CanUndo() );
1602 }
1603
1604 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1605 {
1606     event.Enable( CanRedo() );
1607 }
1608
1609 void wxTextCtrl::OnInternalIdle()
1610 {
1611     wxCursor cursor = m_cursor;
1612     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1613
1614     if (g_delayedFocus == this)
1615     {
1616         if (GTK_WIDGET_REALIZED(m_widget))
1617         {
1618             gtk_widget_grab_focus( m_widget );
1619             g_delayedFocus = NULL;
1620         }
1621     }
1622
1623     if (wxUpdateUIEvent::CanUpdate(this))
1624         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1625 }
1626
1627 wxSize wxTextCtrl::DoGetBestSize() const
1628 {
1629     // FIXME should be different for multi-line controls...
1630     wxSize ret( wxControl::DoGetBestSize() );
1631     wxSize best(80, ret.y);
1632     CacheBestSize(best);
1633     return best;
1634 }
1635
1636 // ----------------------------------------------------------------------------
1637 // freeze/thaw
1638 // ----------------------------------------------------------------------------
1639
1640 void wxTextCtrl::Freeze()
1641 {
1642     if ( HasFlag(wxTE_MULTILINE) )
1643     {
1644         if ( !m_frozenness++ )
1645         {
1646             // freeze textview updates and remove buffer
1647             g_signal_connect (m_text, "expose_event",
1648                               G_CALLBACK (gtk_text_exposed_callback), this);
1649             g_signal_connect (m_widget, "expose_event",
1650                               G_CALLBACK (gtk_text_exposed_callback), this);
1651             gtk_widget_set_sensitive(m_widget, false);
1652             g_object_ref(m_buffer);
1653             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1654         }
1655     }
1656 }
1657
1658 void wxTextCtrl::Thaw()
1659 {
1660     if ( HasFlag(wxTE_MULTILINE) )
1661     {
1662         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1663
1664         if ( !--m_frozenness )
1665         {
1666             // Reattach buffer and thaw textview updates
1667             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1668             g_object_unref(m_buffer);
1669             gtk_widget_set_sensitive(m_widget, true);
1670             g_signal_handlers_disconnect_by_func (m_widget,
1671                     (gpointer) gtk_text_exposed_callback, this);
1672             g_signal_handlers_disconnect_by_func (m_text,
1673                     (gpointer) gtk_text_exposed_callback, this);
1674         }
1675     }
1676 }
1677
1678 // ----------------------------------------------------------------------------
1679 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1680 // ----------------------------------------------------------------------------
1681
1682 // FIXME: when dragging on a link the sample gets an "Unknown event".
1683 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1684 // a buggy sample, or something else
1685 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1686 {
1687     event.Skip();
1688     if(!(m_windowStyle & wxTE_AUTO_URL))
1689         return;
1690
1691     gint x, y;
1692     GtkTextIter start, end;
1693     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1694                                                 "wxUrl");
1695
1696     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1697                                           event.GetX(), event.GetY(), &x, &y);
1698
1699     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1700     if (!gtk_text_iter_has_tag(&end, tag))
1701     {
1702         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1703                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1704         return;
1705     }
1706
1707     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1708                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1709
1710     start = end;
1711     if(!gtk_text_iter_begins_tag(&start, tag))
1712         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1713     if(!gtk_text_iter_ends_tag(&end, tag))
1714         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1715
1716     // Native context menu is probably not desired on an URL.
1717     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1718     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1719         event.Skip(false);
1720
1721     wxTextUrlEvent url_event(m_windowId, event,
1722                              gtk_text_iter_get_offset(&start),
1723                              gtk_text_iter_get_offset(&end));
1724
1725     InitCommandEvent(url_event);
1726     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1727     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1728     GetEventHandler()->ProcessEvent(url_event);
1729 }
1730
1731 // static
1732 wxVisualAttributes
1733 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1734 {
1735     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1736 }